Machine for making arbors for incandescent lamps.



H. D. MADDEN. MACHlNE FOR MAKING ARBORS FOR INCANDESCENT LAMPS.

- APPLICATION FlLED DEC. 5. 1910. 1,159,853. Patented Nov. 9, 1915.

5 SHEETS-SHEET 2.

Big. 2.

WITNESSES:

H.D.MADDEN MACHINE FOR MAKING ARBORS FOR INCANDESCENT LAMPS.

APPLICATION FILED DEC. 5. 1910.

1,1 59,858. Patented Nov. 9, 1915.

5 SHEETS-SHEET 3- INVENTOR WITNESSES: S I

' ATTORNEY H. D. MADDEN.

MACHINE FOR MAKING ARBORS FOR INCANDESCENT LAMPS. APPUCATION FILED050.5,1910.

1,1 59,853, Patented Nov. 9, 1915.

5 SHEETSSHEET 4.

WITNESSES: g INVENTOR WSW H. D. MADDEN. MACHINE FOR MAKING ARBORS FORINCANDESCENT LAMPS.

APPLICATION FILED DEC-5,1910.

Patented Nov. 9, 1915.

5 SHEETSSHEET 5.

INVENTOR 1 WM AT-TORNEY WITNESSES: @MV/ (Que g, MW

HARRY I). MADDEN, OF BLOOMFIELD, NE

W JERSEY, ASSIGNOR T0 WESTINGHOUSE LAMP COMPANY, A CORPORATION OFPENNSYLVANIA.

MACHINE FQR MAKING AIR-BORS FOR IN CANDESCEN T LAMPS.

Specification of Letters Patent.

Patented Nov. 9, 1915.

Application filed December 5, 1910. Serial No. 595,633.

To all whom it may concern.

Be it known that I, HARRY D. MADDEN, a' citizen of the United States,and a resident of Bloomfield, in the county of Essex and State of NewJersey, haveiinvented a new and useful Improvement in Machines forMaking Arbors for Incandescent Lamps, of which the following is aspecification.

My invention relates to machines used in the manufacture of incandescentlamps, and it has for its object to provide a machine whereby glass rodsthat are adapted to be used as arbors in incandescent lamps may beprovided with beads or buttons into which filament supports or anchorsmay be inserted.

Figure 1 of the accompanying drawings is a view in transverse sectionand in side elevation of a machine that is constructed in accordancewith the present invention. Fig. 2 is a view in front elevation of thesame machine. Fig. 3 is a plan view of some of the top parts of themachine, viewing ,the same at an angleof 45 to the vertical andhorizontal. Fig. 4 is a plan and sectional view of certain of the partsof the machine upon the line IVIV of Fig. 1. Fig. 5 1s a similar view ofother parts of the machine upon the line VV of Fig. 1.

The operating parts of the machlne are carried by a hollow base 1 and astandard that is mounted upon the base and comprises vertical rods orposts 2, a top bracket 3 and an intermediate bracket 4, the bracketsbeing supported by the posts. The base 1 and the bracket 3 are providedwith lateral bearings 5 and 6, respectively, for a main yert cal shaft 7upon the lower end of which 1s loosely mounted a driving pulley 8 towhlch power may be applied from any suitable source and the upper faceof the hub of which is provided with bosses and intervening recessesconstituting a clutch member Keyed to the shaft 7, so as to belongitudinally movable thereon, is a corresponding and opposing clutchmember 10 that is adapted to be moved into and out of engagement withthe clutch member 9 by means of a lever 11, one end of which is pivotedto the base 1 and the free end of which 1s'provided with a thumb nut 12for locking the lever in clutch-engaging or disengaging position.

The shaft 7 is operatively connected, by means of bevel gears 14 and 15,to a short inclined at an horizontal shaft 16 for which bearings 17 and18 are provided in the base 1, the said shaft carrying two cams 19and20. Bearing upon the edge of the cam 19, is a roller 21 that iscarried by a member 22 having a slot through which the shaft 16projects, the said member being attached to the lower end of a verticalrod 23, the upper end of which is connected to a lever 24, the functionof which will be hereinafter more fully set forth. The roller 21 ismaintained in engagement with the cam 19 by means of a helicalcompression spring 25 that surrounds the rod 23 and is interposedbetween a stop 26 carriedby the said rod 23 and the base 1 and is alsoinclosed by a sleeve 27 formed integral with the base 1.

Bearing upon the edge of the cam 20, is a roller 28 that is mounted inthe lower end of a vertically extending rod 29. The rod 29 is adaptedto' reciprocate in a guide sleeve 30 carried by the base 1 and it issurrounded, within the said sleeve, sio-n'spring 31, that is interposedbetween the shoulders, respectively on the sleeve 30 and on the rod 29,and serves to maintain the roller 28 in engagement with the cam 20. Theupper end of the rod 29 is provided with a central bore for thereception of another rod 32, upon the upper end of which is formed ahead 33 constituting a stop or rest for the rods of glass upon which themachine is adapted to'form beads or buttons.

The upper end of the main shaft 7 is operatively connected, by means ofbevel gears 36 and 37, to a short shaft 38 that is angle ofapproximately 45 to the vertical and horizontal and is provided with abea ing carried by a small bracket 39 which is mounted upon the bracket3. At its upper end, the shaft 38 carries a'cam 40, which, once everyrevolution, engages a roller 41 mounted at the end of one of the arms ofa lever 42 that is loosely mounted upon the lower end of another shortinclined shaft 43, the lever 42 being thereby moved through apredetermined angle at each revolution of the cam 40. The shaft 43 isprovided with a bearing 44 that is formed integral with an inclinedplate 45 carried by the bracket 3 and, rigidly secured to its lower end,is a ratchet 46 that is engaged by a pawl 47 carried by the lever 42.The pawl 47 is maintained in by a helical compresthe ratchet 46 by meansof the lever .42 is normally engagement with a spring 48, and

maintained in the position shown in Fig. 3'

Mounted upon the upper end of the shaft 43, is a cone-shaped wheel ormember 53 having grooves or recesses 54 extending in the directions ofelements thereof, said grooves being adapted to receive the rods uponwhich beads or buttons are formed by the machine. Mounted above theconeshaped wheel or member 53, with its lower narrower open end closelyadjacent to the upper horizontal face of the said wheel, is a hopper 55that is adapted to contain the rods constituting the material upon whichthe machine operates, the said rods being fed, one by one, as the wheelis rotated, into the grooves or recesses therein. It will be obviousthat rods of greater length than the hopper cannot be fed into themachine, a greater uniformity of the product being thus insured. Therods are maintained in the slots or recesses in the wheel 53, duringapproximately a half revolution thereof, by means of a frusto-conicalshaped plate 56 that is secured to the plate 45 and fits the surface ofthe wheel 53 rather closely. It will be understood that the wheel 53 isadvanced intermittently, by the cam 40, through angular distancesequaling the an gular distances between the grooves or recesses in theface thereof.

As .the glass rodsare brought, by the wheel 53, from a horizontalposition, in which they lie in the hopper 55, to a vertical position,they are dropped through a slot 58 in the edge of the plate 45 into theupper flared end of a vertical tube 59, and, from thence, upon the rest33. The upper end of the tube 59 is pivotally connected to the lever 24that is actuated by the rod 23, and its body portion is surrounded by asleeve 60 that is capable of reciprocation within another sleeve ormember 61 carried by the bracket 3. A helical compression spring 62 isinterposed between a shoulder on the sleeve 61 and a stop 63 that isattached to the upper end of the sleeve 60, the said parts beingthereby'normally maintained in the positions shown in Fig. 1. Secured tothe lower end of the sleeve 60, is a tubular shell 64 having a conicallower end within which clutch members 65, having shoulders 66 upon theirinner edges, are suspended, by means of links 67, from the lower end ofthe tube 59. The said parts constitute a clutch or chuck through whichthe glass rods may drop freely when the parts thereof occupy thepositions shown in Fig. 1. but which grips the upper ends of the saidrods when the members 65 are dropped upon the moved downwardly andtoward each other by the operation of the lever 24, the upper ends ofthe rods being engaged by the shoulders 66 upon the clutch members 65,so that, as the sleeve 60 and the member 64 are moved'downwardly, theglass rods are compressed longitudinally. It will be understood, from aninspection of Fig. 1, that the first part of the downward movement ofthe lever 24 causes the clutch members 65 to move inwardly and engagethe upper end of the rod, and that, subsequently, the lever 24 engagesthe stop 63, carried-by the sleeve 60, and forces the said. sleevedownwardly. In order to accentuate the positions of the sleeve 60, thesaid sleeve is provided with suitably spaced circumferential recesses 68and 69 intowhich a block or piston 70 is forced by means of a helicalcompression spring 71.

Immediately after the glass rods are rest or stop 33, they are grippedby a pair of horizontal jaws 7 4 that are pivotally secured to thebracket 4 and are provided with gear teeth 7 5 which engage and causethe jaws to operate simultaneously and similarly. The jaws are normallymaintained closed by means of a ring shaped spring 76, and they arecaused -to separate by means of a cam 77 carried by the main shaft 7 andadapted to engage with aroller 78 carried by one of the jaws 74.

Immediately after the jaws 74 are separated to release the rods, theyare ejected therefrom by means of an ejector arm 79 that is carried atone end of a horizontal longitudinally reciprocable rod 80 for which aguide bearing is provided in the bracket 4. The said rod and ejector armare normally maintained in the positions shown by means of a spring 81and are advanced against the action of the said spring to eject the rodsby'means of a cam 82 that is carried by the main shaft 7.

As the rods are ejected from the jaws 74, they are dropped upon a guideor slide 84, with the buttons formed near the upper ends thereofengaging the upper edges of the said guide and supporting the rods in ahorizontal vertical position. The said guide consists of a doubled pieceof strap material having its ends spread apart and attached to the twofront posts 2 of the machine and its adjacent side portionsparreceptacle. The object of the guide as thus constructed is to providemeans for maintaining the rods in an erect or vertical position untilcooled to such a degree that they will not bend when finally dischargedfrom the machine.

The glass rods are heated, at the points where it is desired to make theenlargements constituting the beads or buttons, by means of two sets ofburners 88 and 89, respectively, the burners88 being adapted to directflames upon the rods directly above the jaws 74, and the burners 89being adapted to direct flames upon the rods at their lower ends and ashort distance above the rest 33. The burners 88 and 89 are suppliedwith gas and air through an economizer 90,'by means of which the supplyof air to the burners is cut off and the supply of gas is reduced duringthe periods when the rods are being fed into the jaws 74 and removedtherefrom.

The economizer comprises a block 91 that is provided with a verticaltapered aperture extending entirely therethrough and containing arotatable tapered plug 92. Two horizontal passages 93 extend from oneedge of the block 91 inwardly to the vertical tapered aperture, andinlet pipes 94 and 95, respectively for air and gas, are threaded intothe said passages. The block 91 is also provided, in a horizontal planewith the passages 93, with drillings 96 that ex tend laterally from bothsides of the vertical tapered aperture therein, and with otherhorizontal drillings 97 that connect the drillings '96 with other'vertical drillings 98 located near the corners of the block and intowhich outlet pipes 99 are threaded, the said outlet pipes leading,respectively, to the two sets of burners 88 and with the two sets ofhorizontal passages and drillings in the block, with horizontal orlateral drillings 100- arranged to form two T-shaped passagestherethrough and adapted, when the plug is in proper position, toconnect the passages 93 with the drillings 96. Upon the lower end of theplug '92, is mounted a lever 101, that is normally maintained in aposition corresponding to a full supply ofgas and air to the burners bymeans of a spring 102, and is provided at the extremity of one of itsarms with a roller 103 that is interposed in the path of movement of acam 104 carried by the main shaft 7, the cam being of such a shape as toperiodically operate the plug 92 in order to govern the supply of gasand air as above set forth. The proportions of 'air and gas in themixturemay be adjusted by means of rods 105 that are threaded into theblock 91 in alinement with the drillings 97 and are adapted to regulatethe effective areas thereof.

sition as to cause rod.

The plug 92 is provided, in a plane.

In the operation of the machine, the hopper 55 is filled with glass rodswhich drop one at a time, into the grooves or recesses in the conicalwheel 53 and are brought thereby from a horizontal position into avertical position, the said wheel being. actuated only periodically soas to feed the rods at the roper intervals. As the rods are brought intoa. vertical position, they are dropped, through the notch 58 in theplate 45, and through the tube 59, upon the rest 33, their uooer endsstill extending into the lower end of the member 64. At the time therods are drop ed, the cam 77 engages the roller 78 and the jaws 74 areaccordingly opened sufliciently to permit the rods to drop between them.Upon a little further rotation of the main shaft 7, the cam 77disengages the roller 78 and the mitted to tightly grip the rod that hasbeen fed andfirmly hold it in position. Until the jaws 74 have beenclosed upon the rod, the economizer 90 occupies such a position jaws 74are then peras to cut off the supply of alr, and to partially cut offthe supply of gas, to the burners 88 and 89, but, when the jaws haveclosed, the economizer is operated so as to permit a full supply of gasand air to the burners-and the rod is thus heated. After a time, the cam19 is brought to such apothe rod 23 to be drawn downwardly, with theresult that the lever 24 actuates the tube 59 and causes the clutchmembers 65 to grip the upper end of the After another period of heating,the cam 19 causes the rod 23 to be drawn down still farther, with theresult that the-upper end of the lever 24 engages the upper end of thesleeve 60 and causes the parts 60, 64 and 65 to move downwardly a shortdistance, thereby compressing the rod longitudinally and causing alateral expansion thereof where it is heated directly above the jaws 74.Approximately at the same time, the cam 20 causes the rest 33-to beraised, and the glass rod is also compressed between the jaws 74 and thesaid rest, causing a lateral enlargement thereof at the point where itis heated. After still further heating of the rod, the cams 19 and 20cause additional compression thereof upon both sides of the jaws 74,with the result that the enlargements previously made are enlarged andbeads or buttons of the desired diameter are thereby formed. Upon still/further rotation of the main shaft 7 and of the cams 19 and 20, theparts 59, 60, 64 and 65 are raised and the rest 33 is lowered and thejaws 74 are opened, followed by the forward movement of the ejector 79,which throws the completed arbor-outwardly upon the guide 84, the glassrod being now so contracted in length as to permit it to clear themember 64. Just previous to the ejection of the arbor from the jaws 74,the economizer cuts oif the supply of air and partially cuts off thesupply of gas. The operation continues as above set forth for each rod.

I claim as my invention:

1. A machine of the character described comprising a rest for the rods,a clutch adapted to engage the upper ends of the rods, a clamp adaptedto engage therods at an intermediate point, means for locally applvingheat to the rods, and means for actu ating the rest and the clutch tocompress the rods upon both. sides of the clamp and to thereby enlargethe locallv heated ortions thereof.

2. A machine of the character described comprising a clamp for the rodsto be operated upon having separable jaws, means for locally applyingheat at a point between the ends of the rods, means compressing the rodsto cause enlargement thereof at the locally heated portion or portionsthereof, and means for actuating the clamp to periodically grip andrelease the rods.

3.'A machine of the character described comprising a rest for the rodsto be operated upon, a clutch adapted to engage the upper ends of therods, means for locally applying heat to the rods, and means for movingthe rest and the clutch in alinement to ward and away from each other.

4. A machine of the character described comprising a rest for the rodsto be operated upon, upper ends of the rods, a clamp for the rods, meansfor locally applying heat to the rods, means for moving the rest and theclutch toward and away from the clamp, and means for periodicallyopening and closing the clamp.

5. A machine of the character described means for locally applying forlongitudinally a clutch adapted to engage the I comprising a rest forthe rods to be operated upon, a clutch adapted to engage the upper endsof the rods, a clamp for the rods, heat to the rods, means for movingthe rest and the clutch toward and away from the clamp, means forperiodically opening and closing the clamp, and means for ejecting therods from the clamp when it is open.

6. A machine of the character described comprising a clamp for the rodsto be operated upon, means for locally applying heat to the rods, meansfor causing enlargements thereof at the locally heated portion orportions, and means for ejecting the rods from the clamp when it isopen, and an inclined slotted receiver adjacent to said clamp.

7. A machine of the character described comprising a. guide for the rodsto be oper ated upon, a hopper, means for intermittently feeding rodsfrom the same into the guide, a clamp for the rods having separablejaws, means for locally applying heat to the rods at a pointintermediate the ends thereof, and means for compressing the rodslongitudinally so as to cause enlargement thereof at the locally heatedportion or portions.

8. A machine of the character described com rising a hopper having aslotted outlet, a feed device having a conical recessed face ad acent tosaid outlet, means for retaining articles in said recesses, and meansfor rotating said feed device.

In testimony whereof, I have hereunto subscribed my name this 23rd dayof November, 1910.

HARRY D. MADDEN. Witnesses:

OTTO S. SGHAIRER, Cnannss E. KELLY.

